[Gutenberg 57223] • Airplane Boys Discover the Secrets of Cuzco / Airplane Boys #3

This story has been published under three separate titles, as part of three different series. As Airplane Boys Discover the Secrets of Cuzco, it is the third entry in *The Airplane Boys* series; as Flying in Southern Wilderness (published under the pseudonym M. Delmore Marquith) it is the third entry in the *Skylarking Comrades* series; and as The Sky Buddies Secrets of Cuzco, it is the third entry in *The Sky Buddies Series*.

*The Airplane Boys* series by E. J. Craine (originally published in the 1930s) is a new series of hair-raising sky adventures. The dare-devil younger generation of this day and age, going through stunts, flying day and night, having their own fun and at the same time helping others. The technical end of aviation is also brought in, and the humorous situations keep the reader amused constantly.